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A fuel economiser for boilers characterized by being a straight tube that ends at one end with a diffuser in the form of a fan, fitted with front notches and a central hole that makes contact with the chamber of the diffuser and tube that connects it . (Machine-translation by Google Translate, not legally binding)
Improvements in the manufacture of reciprocally adaptable armchairs for online installation (Machine-translation by Google Translate, not legally binding)